Air and gas mixer.



S. LESCHZINER. AIR AND GAS MIXER.-

APPUCATION FILED SEPT. 30. 1915. v 1312 233. Patented Jan. 16,1911

WITNESSES INVENTOR' A TTORA/E) I -a citizen of the United States, residing at.

UNITED 3 STATES rATEuT orrios. i

SIEGFRIE'D LESCHZINEB, OF LNEVVJPiRK, NEW JERSEY.

To all'uihom it maywnecr'n:

Be it known that I, Smormnn LEsoHz NER,

Newark, in the cdunty of Essex and State of ew Jersey,.have invented certain new and useful Improvements in Air and Gas Mixers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertai-ns to make and use the same, reference being bad to the accompahying drawings, and to the characters of reference marked thereon,

which form a part of this specification.

The invention relates to improvements in air and gas mixers; and consists in the novel features and combina ions hereinafter described, and particularly pointed out in the claims. p

The object of the invention is'to provide an improved device of this class, which will be relatively simple and inexpensive in construction, convenient in installation, neat in appearance, and generally'superior in point of efiiciency'and adaptable to varying conditions of 115e,

In the drawings Figure 1 represents a side elevation of my improved device, partly in section. Fig. 2 represents an end elevation,

' 3 partly in section taken on lines wear in Fig.

1', Fig. 3 represents a plan view. Figs. 4, 5 and 6 represent sectional views of the air and gas mixer casing and illustrating therein the inner and outer throttling tubes and the valve carried thereby in its open and closed position.

Similar characters of reference are employed in all of the hereinabo 'e' described views to illustrate cc esponding parts. i

In the drawings 1 represents the air and gas mixer casingg-open throughout its length, and provided at-one end with a flange 2 adapted to be registered .with and secured to theflange of the free end of a manifold leading to the cylinder of a-combustion engine as is well known. Extending trans- I gated discharge port 5.

versely through said casing l and journaled 1n the end of a suitable bearing portion 3 secured on one side ofithe casing 1 is an outer throttling tube 4 provided with an elon- Extendi'ng through, so as to be'jou-rnaled to rotate against the in; ner sides of said outer throttling tube i, is an inner throttling tube 6, the same being provided with a similar discharge port 7, as is formed in the throttling tube l adapted to AIR AND GAS MIXER.

Specification of Letters fatent.

tube 6 to alter the proportion of air and gas delivered to the engine. The arrangement and shape of the respective ports 5 and 7 may be variously modified, so long as in operating the :throttling tubes, a variable port area may be obtained. The free end of thebearing portion 3 is provided with an outwardly extending interiorly threaded portion 9 to receiver the free end of a gas conveying pipe so as to deliver the gaseous fuel from the source of gas or gaseous fuel to the interior or tubular passage 8 of said inner throttling tube (3, which is open at its lower end, the upper end of said inner throt; tling tube 6 being closed against the escape of gaseous fuel'therefrom by means of a suitable spring receiving cap or closing member 10 suitably secured either integrally or removably to the upper end of the inner throttling tube 6. A spiral spring 11 surrounds the inner throttling tube 6, one end of said spring being secured to the closing member 10, and the other end of said spring passingthrough a suitable opening 12 in said closing member 10, and engaging with a stop part 13 secured to the casing 1 as ,olearly indicated in Fig.1 of the drawings. A screw H is connected with the stop part 13 to be engaged by a stud 15 secured to the closing member 10. The outer throttlii'ig tube 4 has secured thereto in any convenient or desired man, ner an operating lever 16 to the free end of which a connecting rod or the like is secured for rotatiiig said outer throttling tube. The operating-lever 16 is further provided with two extensions 17 and 18 which are prefengagefivith the stud 13 to limit the movement of said lever 16. Secured exteriorly upon the outer suriace oi said outer throt- Patented Jan. in, 1917.

Application filed September 30, 1915. I Serial No. 53,229. i v i tling tube 4, so as'to turn therewith, and so as to extend transversely within the main passage 2101: said casing 1, is a semi-spherical valve member 22, held thereon by astrap 23 secured to the valve 22 by means of screws 24 which screens also serve to secure a gauzescre'en member 25 to the valve member 22. The gauze screen member 25 covers an open ing 26 in the strap 23 which registers with the discharge port 5 in the outer throttling tube l, .thereby serving to guard Said discharge ort 5 against the entrance of any chance ack-fire therethrough, which may emanate from the engine-cylinders and pass into the manifold and at the same time serving to further break up or mix the constituents of the gaseous fuel. discharged through said discharge port 5 into the manifold for delivery to the engine cylinders.

A spring actuated adjustable butterfly valve 27, is transversely located in the casing 1, mounted upon a shaft 28 one end of which extends exteriorly of said casing l and projects into a suitable tubular member 29 provided with two extensions, 30 through which screws 31 pass and by means of which said tubular member 29 is secured to the outside of the casing. The tubular member at its outer end is interiorly screw threaded for the reception of an adjusting screw A suitable stud 33 is secured to the shaft 28 and a spiral spring 34: surrounds said shalt where it projects into the tubular member 29 one end of said spring 3% being located in suitable aperture formed in the adjusting screw and the other end of said spring being secured to the stud 3 The valve :2? is provided with a suitable opening 34' de signed to be closedvby a latch 37 pivotally secured to said valve 27 by means of a screw 38. A stud 39 secured to the interior of casing l and .with which the valve 27 is adapted to engage limits the movement of said valve. It will thus be seen that owing to the port 36, which is provided with the shutter 37 to regulate the relative effective areas on the two sides of the shaft, so as to regulate the preponderance of pressure on the lower side of valve 27, the spring-actuated butter-tly valve 27 is automatically operated by suction due to its being more or less unbalanced, owing to the port 36, the area. of which can be regulated by means of the shutter 37.

Having described the mechanical details of construction of the novel carbureter, I will now describe the operation and manner of using same. Assuming that the internal combustion engine which the air and gas mixer serves is running the gaseous fuel drawn into the cylinders of the engine by the suction strokes of the piston in the usual manner. The said suction strokes of the piston in the engine creates a suction in the manifold within the main passage 21 of the casipg l and the ports of the respective throttling tubes being so registered as to give the desired amount of opening and com mumcation with the interior passage 8 of said inner throttling tube 6 said suction is also set up in said passage 8 and in the conveying pipe 9 with which the passage 8 communicates.

It is to be understood that my improved device is to be used in connection with means located Within the main fuel supply tank,

by means of which the mixture or fuel is drawn directly from the maln supply tank containing the liquid fuel said means being preferably supported by a float upon the surthe casing l to permit the gaseous fuel topass throu b said openings and under the.

further int uence of the suction created by the engine pistons the gaseous fuel or admixture of gasolene. and air which is regulated by the automatic spring actuated butterfly valve 27 and the semi-spherical valve 22 passes through the manifold and is delivered to the engine cylinders in the well known manner. The rotation of the outer throttling tube l is limited by means of the stop screws 1!) and 20 engaging with the stud 13 which causes the valve 22 to assume its maximum open position as indicated in Fig. 6 of the drawings. When the valve is closed as shown in Fig. 4 of the drawings, the discharge port 7 of the inner throttling tube 6 will register with the discharge port 5 of the outer throttling tube 4 by moving the stud 15 in the direction indicated by the arrow in Fig. of the drawing by operating a suitable pull-wire (not shown) secured to the stud 15. 1

Experience has demonstrated that the organization above described is a highly eflicient one, and while I have shown the preferred embodiment of my present invention,

1 do not wish to be limited to the exact details of construction and combination herein set forth, it being obvious that minor variations thereof, notinvolving the exercise of invention, may be made by any skilled mechanic, and such departures from what is herein described and claimed, I consider within the scope and terms of my claims.

I claim i 1. An 'air and gas-mixer comprising a main. casing, an outer throttling tube/(pros.

vided with a discharge port, extending transversely through said casing, an inner throttling tube, provided with a discharge port, journaled within said outer throttling tube so as to rotate against the inner sides of said outer throttling tube to cause the respective discharge semi-spherical valve located within said ports to register, a.

main casing and secured to the outer throttling tube, said valvebeing provided with a discharge, opening registering with the discharge opening inthe'outcr throttling tube Largaee 3 an means-secured tothe inner andouter th ottlmg" tubes extending outside of the ina'n casingfor operating said tubes and 'valve.

'2 An air and gas mixer comprising a main casing, an outer throttling tube, provided with a. discharge port, extending transversely through said casing, an inner throttling tube, provided with a discharge port, j ournaled within said' outer throttling "tube so-as to rotate againstthe inner sides of said outer throttling tube to cause the respective discharge por t register; a Semispherical Valve located Within said maincasingand secured to the outer throttling tube, said valve being provided with a discharge opening registering with the discharge opening in the outer throttling tube means secured tothe inner and outer throttling tubes, extending outside of the main main casing, an outer throttling tube, pro

vided with a discharge port, extending transversely through said casing, an inner spring actuated throttling tube, provided .with a discharge port, journaled within said outer throttling tube so as to rotate against the inner sides of said outer throttling tube to cause the respective dischargev ports to register, a semispherical valve located within saidmain casing and secured to the outer throttling tube, said valve being provided with a discharge opening registering with the discharge opening in the, outer throttling tube, means secured tothe inner and outer throttling tubes extending outside of the main casing for operating said tubes and valve, and a spring actuated valve also located transverselycwlthin said main casing, provided with an opening,'and adjustable means for closing said opening.

This specification signed a'n'd vwitnessed this 29th day of July 1915. sinsraiab 'LESCHZINER.

Witnesses: f

FREDK C. Freeman, EDWARD A. Grrr. 

